In interviews with Florida Center for Investigative Report, Post Office employees Oquendo and Ocasio confirmed in detail Lill’s recounting of what occurred in Orlando on Feb. 4, 2011. FCIR also obtained a time-stamped email Lill sent to his supervisor, Cynthia Hickman, reporting the exposure to a potentially toxic substance that day.

Why, despite paper records and two whistle-blowers’ accounts, the Postal Service refuses to investigate the incident is something of a mystery. But it’s also a national security concern, demonstrating how the Postal Service may not have investigated a potential terrorist attack in Florida.

In October 2010, four months before Lill came in contact with the package, authorities intercepted two packages from Yemen with bomb materials hidden inside printer ink cartridges. One was discovered in Britain aboard a UPS cargo plane and the other was found in a FedEx warehouse in Dubai. The Postal Service briefly stopped accepting mail from the country. Yemeni police then arrested a suspect in the case, and deliveries from Yemen to the United States resumed.